WO2008063184A1 - Boîtier réfrigéré - Google Patents

Boîtier réfrigéré Download PDF

Info

Publication number
WO2008063184A1
WO2008063184A1 PCT/US2006/049364 US2006049364W WO2008063184A1 WO 2008063184 A1 WO2008063184 A1 WO 2008063184A1 US 2006049364 W US2006049364 W US 2006049364W WO 2008063184 A1 WO2008063184 A1 WO 2008063184A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
module
recirculation
refrigerated
baffles
Prior art date
Application number
PCT/US2006/049364
Other languages
English (en)
Inventor
Eugene D. Daddis, Jr.
Mary D. Saroka
Brian J. Mead
Original Assignee
Carrier Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carrier Corporation filed Critical Carrier Corporation
Publication of WO2008063184A1 publication Critical patent/WO2008063184A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/02—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors plug-in type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0021—Details for cooling refrigerating machinery using air guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0026—Details for cooling refrigerating machinery characterised by the incoming air flow
    • F25D2323/00264—Details for cooling refrigerating machinery characterised by the incoming air flow through the front bottom part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0027—Details for cooling refrigerating machinery characterised by the out-flowing air
    • F25D2323/00271—Details for cooling refrigerating machinery characterised by the out-flowing air from the back bottom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems

Definitions

  • the invention relates to refrigerated cases. More particularly, the invention relates to such cases having refrigeration modules.
  • the refrigeration equipment is located in a self-contained module which may be installed to and removed from the case as a unit.
  • An exemplary module includes the compressor, condenser, expansion device, evaporator, and associated fans.
  • the module is typically installed in a base of the case below the refrigerated compartment.
  • the module is typically installed to the base via rearward insertion through a front of the base. The insertion may be followed by a short lifting of the module to mate portions of the module forming the recirculating air flowpath with mating portions of the remaining structure of the case (e.g., and compressing a gasket/seal therebetween).
  • one aspect of the invention involves a refrigerated case having a refrigerated compartment.
  • a base is below the refrigerated compartment.
  • a refrigeration module is within the base.
  • a first air flowpath recirculates between the refrigerated compartment and the heat absorption heat exchanger.
  • a second air flowpath extends through the heat rejection heat exchanger.
  • Baffles e.g., first and second lateral baffles and/or a lower baffle
  • FIG. 1 is a partially exploded view of a refrigerated case.
  • FIG. 2 is a longitudinal (front-to-back) vertical sectional view of the case of FIG. 1.
  • FIG. 3 is a front view of the case of FIG. 1 with door and grille removed.
  • FIG.4 is an enlarged view of a platform area of the case of FIG. 2.
  • FIG. 5 is a vertical schematic view of a lateral warm air recirculation.
  • FIG. 6 is a lateral schematic view of an under-module warm air recirculation.
  • FIG. 7 is a downward sectional view of the case of FIG. 1 with grille removed.
  • FIG. 8 is an enlarged view of a lateral space aside the module of FIG. 3.
  • FIG. 9 is a view of a pair of lateral baffles.
  • FIG. 10 is a view of a lower baffle.
  • FIG. 11 is a proximal downward sectional view of an alternate case base.
  • FIG. 12 is a view of baffles of the alternate case base.
  • FIG. 1 shows a refrigerated case 20 having a housing (body) 22 surrounding a refrigerated interior compartment 24.
  • the exemplary housing 22 includes a main body 25 a door 26 positioned to close and open across a front opening 28 of the main body.
  • the exemplary body 22 has a left sidewall 30, a right sidewall 32, a back 34, and a top 36.
  • left and right are viewed from the perspective of the case rather than a user facing the case.
  • a lower portion of the body 22 forms a base 40 including an exemplary platform 42.
  • a base compartment or bay 44 is separated from the compartment 24 by a compartment bottom wall (dividing wall) 46.
  • a front of the compartment 44 may be closed by a removable grille 48.
  • An overall case depth D is shown in FIG. 2.
  • An overall case body height Hi, an overall case height H 2 , and an overall case width W are shown in FIG. 3.
  • a recirculating airflow is directed from/to the compartment 24 by a refrigeration equipment module 50 (e.g., containing the compressor, heat exchangers, expansion device, fans, and the like).
  • the module 50 (discussed in further detail below) has an installed position within the compartment 44.
  • the module 50 is removable from the compartment 44 as a unit (e.g., after removing the grille 48, if present), advantageously without the use of tools or with only slight tool use.
  • the exemplary module 50 has a front 51, a back 52, a top 53, a bottom 54, a left side 55, and a right side 56.
  • FIG. 2 shows further details of the exemplary case 20 and module 50.
  • the exemplary module 50 contains the compressor 60, the heat rejection heat exchanger (e.g., condenser and/or gas cooler) 62, the expansion device 64, and the heat absorption heat exchanger (evaporator) 66 sequentially along a recirculating refrigerant flowpath (e.g., further defined by appropriate refrigerant lines/conduits).
  • a recirculating airflow 510 passes along a recirculating flowpath (the cold air flowpath) 512 through the module 50 and compartment 24 to cool the compartment.
  • the exemplary flow 510 passes from the compartment 24 into the module 50 through a first port 70 in the wall 46 and returns to the compartment 24 via a second port 72 in the wall 46.
  • the exemplary flow 510 is driven by an electric fan 74 in the flowpath 512 in the module 50.
  • An airflow 514 passes along a flowpath (the warm air flowpath) 516 which extends through the heat rejection heat exchanger 62.
  • the exemplary path 516 is an open path entering through the grille 48, then entering the front 51 of the module 50 and passing through the heat rejection heat exchanger 62 before exiting the rear 52 of the module and rear of the case.
  • An electric fan 76 may be in the warm air flowpath 516 in the module 50 to drive the airflow 514.
  • the exemplary platform 42 (FIG. 1) includes a transverse front base rail 90 and a transverse rear base rail 92. Left and right longitudinal rails 93 and 94 join the base rails.
  • the exemplary base rails have downwardly-open C cross-sections for strength.
  • the exemplary rails 93 and 94 have L-shaped cross-sections with one web or flange resting on the upper surfaces of the base rails and the other extending upward from a laterally inboard junction.
  • An exemplary four support feet 95 are mounted to the base rails adjacent the left and right ends of the base rails to support the case atop a floor or ground surface 96.
  • the feet may be adjustable for leveling.
  • the exemplary platform supports a pair of lifting arms 99 and 100 (FIG. 3).
  • Each lifting arm includes a forward lever portion 101, a fulcrum portion 102 (FIG. 4), and a pair of driven portions 103 which may engage the underside 54 of the module to raise the module to the installed position and lower it from the installed position.
  • An exemplary baseline case configuration may be subject to an undesirable level of recirculation along the warm air flowpath 516.
  • This recirculation involves air discharged from the condenser returning to the condenser without having cooled to ambient temperature. With warmer-than-ambient air entering the condenser, heat rejection and system efficiency are reduced. A significant portion of this undesirable recirculation may occur within the footprint of the case.
  • a first component of the recirculation may be lateral.
  • the lateral recirculation 520 (FIG.
  • 5) may be along flowpath portions 522 between associated sides 55 and 56 of the refrigeration module (or ducting within the module surrounding the warm air flowpath) and the adjacent sides of the refrigerator footprint (e.g., between the module side and the inboard surface of a base sidewall or base sidewall portion of a case sidewall, if any).
  • Another component of the recirculation may be an under-module recirculation flow 524 (FIG. 6).
  • this may involve flow passing along a flowpath portion 526 between the module underside 54 and the building floor or a bottom panel of the base.
  • An exemplary under-module recirculation 524 may pass downward upon exiting the rear 52 of the module through an opening between the module and a transverse rear base rail of the platform at the bottom of the base or below the base rail.
  • the recirculation passes between the module underside and the floor and returns upward through a gap between the lower front edge of the module and a front base rail (e.g., to which support feet, wheels, casters, rollers, or other supports are mounted). Accordingly, it may be desirable to at least partially block the flowpath portions 522 and 526 to reduce the recirculating flow rate and, thereby, reduce the air temperature entering the heat rejection heat exchanger.
  • FIG. 7 shows side (lateral) baffles 120 and 122 positioned to block the flowpaths 522.
  • the exemplary baffle 120 is positioned in a space 124 between the left side 55 of the module 50 and the interior surface 126 of the left sidewall.
  • the baffle 122 is positioned in a space 128 between the right side 56 of the module 50 and the interior surface 130 of the right sidewall.
  • FIGS. 7 and 8 show exemplary positioning of the baffles 120 and 122.
  • Each exemplary baffle 120, 122 is formed as an L-sectioned piece of bent sheetmetal.
  • the foot of the L forms a mounting flange 140 which may be mounted (e.g., via screws or other fasteners) to the adjacent sidewall surface.
  • the leg 142 of the L is oriented vertically and extends transversely toward an edge 144 near the adjacent side 54 or 55 (FIG. 8) of the module.
  • the exemplary baffles 120 and 122 block a majority of a cross-section of the associated space 124, 128. For example, they may block at least 75% or at least 90% of this area and the associated recirculation (mass flow of air).
  • the baffles may have an array of perforations 150 (FIG. 8) or other apertures so as to create a flexible inboard portion to accommodate assembly tolerances in module position, and the like.
  • the baffles may have notches (e.g., a relieved corner as shown) or other features to accommodate wiring to the module.
  • the baffles may have heights so as to substantially fill the base compartment (e.g., at least 90% of the base compartment height and a height greater than the module height). Exemplary heights are 25-45cm, more narrowly 30-40cm. Exemplary widths are 4-50cm, or more due to larger variation in common unit widths.
  • FIGS. 1 and 4 show a lower baffle 160.
  • the exemplary baffle 160 is mounted below the rails 93 and 94 immediately behind the rail 90.
  • the exemplary baffle 160 is formed as a downwardly-open C-sectioned sheetmetal channel.
  • the baffle 160 functions to reduce an opening for the under-module recirculation from an initial size Si to a smaller restricted size S 2 .
  • the associated flow reduction is less than the associated reduction of the lateral baffles.
  • Other reductions are possible.
  • a portion of the exemplary gap S 2 is associated with the raising and lowering of the module. This gap might effectively be eliminated via a flexible baffle that engaged the module underside during such movement. Nevertheless, and especially when combined with the lateral baffles, overall recirculation reduction may be significant (e.g., an overall reduction of in excess of 50% of a baseline recirculation through the footprint of the case).
  • the exemplary case 20 features an overall width not much greater than its module width. Accordingly, the lateral baffles 120 and 122 are relatively small.
  • FIG. 11 shows a relatively wider case 220 with relatively wide lateral spaces/gaps 222 and 224 aside a similar module associated with similarly positioned longitudinal rails 93 and 94 but a wider base rail 226 extending laterally farther beyond the rails 93 and 94.
  • the exemplary case 220 includes a similar lower baffle 160. However, the excess width of the spaces/gaps create downwardly-open gaps aside the rails 93 and 94. Accordingly, each of the baffles 228 and 229 has a base portion 230 in addition to the foot and leg portions 232 and 234 of the L-section to close those gaps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne un boîtier réfrigéré (20 ; 220) qui possède un corps (22) ayant un compartiment réfrigéré (24). Une base (40) est en dessous du compartiment réfrigéré. Un module de réfrigération (50) est à l'intérieur de la base. Un premier trajet d'écoulement d'air (512) recircule entre le compartiment réfrigéré et l'échangeur de chaleur à absorption de chaleur (66). Un second trajet d'écoulement d'air s'étend à travers l'échangeur de chaleur à rejet de chaleur (62). Des chicanes (par exemple, des première et seconde chicanes latérales (120, 122 ; 228, 229) et/ou une chicane inférieure (160)) sont placées à l'intérieur de la base de façon à bloquer au moins partiellement une recirculation de l'air le long du second trajet d'écoulement d'air.
PCT/US2006/049364 2006-11-20 2006-12-27 Boîtier réfrigéré WO2008063184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86657506P 2006-11-20 2006-11-20
US60/866,575 2006-11-20

Publications (1)

Publication Number Publication Date
WO2008063184A1 true WO2008063184A1 (fr) 2008-05-29

Family

ID=39429989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/049364 WO2008063184A1 (fr) 2006-11-20 2006-12-27 Boîtier réfrigéré

Country Status (1)

Country Link
WO (1) WO2008063184A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110375508A (zh) * 2018-04-13 2019-10-25 青岛海尔股份有限公司 从底部进行散热的冰箱
EP3685110A4 (fr) * 2017-11-01 2020-11-11 Samsung Electronics Co., Ltd. Réfrigérateur
US10935300B2 (en) 2017-11-01 2021-03-02 Samsung Electronics Co., Ltd. Refrigerator including a detachably mounted cooling unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005321A (en) * 1959-08-25 1961-10-24 Philco Corp Multiple temperature refrigerator
US3712078A (en) * 1971-11-22 1973-01-23 Krispin Eng Ltd Refrigeration unit
US20060207279A1 (en) * 2005-03-18 2006-09-21 Carrier Corporation Refrigerated merchandiser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005321A (en) * 1959-08-25 1961-10-24 Philco Corp Multiple temperature refrigerator
US3712078A (en) * 1971-11-22 1973-01-23 Krispin Eng Ltd Refrigeration unit
US20060207279A1 (en) * 2005-03-18 2006-09-21 Carrier Corporation Refrigerated merchandiser

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3685110A4 (fr) * 2017-11-01 2020-11-11 Samsung Electronics Co., Ltd. Réfrigérateur
US10935300B2 (en) 2017-11-01 2021-03-02 Samsung Electronics Co., Ltd. Refrigerator including a detachably mounted cooling unit
CN110375508A (zh) * 2018-04-13 2019-10-25 青岛海尔股份有限公司 从底部进行散热的冰箱
CN110375508B (zh) * 2018-04-13 2024-03-22 海尔智家股份有限公司 从底部进行散热的冰箱

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